Hardware requirements

  • Micro USB cable

  • EVK-MIMX8M Plus board

  • J-Link Debug Probe

  • 12V power supply

  • Personal Computer

Board settings

I2C one board:

  • Transfer data from MASTER_BOARD to SLAVE_BOARD of I2C interface, I2C3 pins of MASTER_BOARD are connected with I2C3 pins of SLAVE_BOARD

SLAVE_BOARD        CONNECTS TO          MASTER_BOARD
Pin Name   Board Location     Pin Name   Board Location
I2C3_SCL       J21-5         I2C3_SCL      J21-5 
I2C3_SDA       J21-3         I2C3_SDA      J21-3
GND            J21-9         GND           J21-9

Prepare the Demo

  1. Connect 12V power supply and J-Link Debug Probe to the board, switch SW3 to power on the board

  2. Connect a USB cable between the host PC and the J23 USB port on the target board.

  3. Open a serial terminal with the following settings:

    • 115200 baud rate

    • 8 data bits

    • No parity

    • One stop bit

    • No flow control

  4. Download the program to the target board.

  5. Launch the debugger in your IDE to begin running the demo.

Running the demo

When the demo runs successfully, the following message is displayed in the terminal:

I2C board2board polling example – Master transfer. Master will send data : 0x 0 0x 1 0x 2 0x 3 0x 4 0x 5 0x 6 0x 7 0x 8 0x 9 0x a 0x b 0x c 0x d 0x e 0x f 0x10 0x11 0x12 0x13 0x14 0x15 0x16 0x17 0x18 0x19 0x1a 0x1b 0x1c 0x1d 0x1e 0x1f

Receive sent data from slave : 0x 0 0x 1 0x 2 0x 3 0x 4 0x 5 0x 6 0x 7 0x 8 0x 9 0x a 0x b 0x c 0x d 0x e 0x f 0x10 0x11 0x12 0x13 0x14 0x15 0x16 0x17 0x18 0x19 0x1a 0x1b 0x1c 0x1d 0x1e 0x1f

End of I2C example .